title: Confinement-dependent damping in a layered liquid.
abstract: We present atomic force microscopy (AFM) measurements of the conservative oscillatory solvation forces and the damping in confined films of octamethylcyclotetrasiloxane using small amplitude modulation with magnetic driving. We find distinct maxima in the interaction damping upon probing the discrete molecular layers, supporting earlier observations of the same phenomenon using AFM with an acoustic driving scheme. The maxima in the damping are located at the same tip-surface separation as the maxima in the conservative oscillatory interaction stiffness.
authors.affiliation: Physics of Complex Fluids and MESA + Institute for Nanotechnology, Department of Science and Technology, University of Twente, Enschede, The Netherlands. s.j.a.debeer@utwente.nl
authors.forename: Sissi
authors.initials: S
authors.lastname: de Beer
authors.forename: Dirk
authors.initials: D
authors.lastname: van den Ende
authors.forename: Frieder
authors.initials: F
authors.lastname: Mugele